Well, what I am looking for is an approximation to closed form integral of the trivariate Gaussian probability density function in spherical coordinates which can be solved for other probabilites other than 50%. I can certainly do a numerically integration of this Gaussian and get a reasonable...
Well, this is not the reply I was looking for....
In any case, the application is not important here.
And yes, this is Gaussian distributed.
There is a closed form equation for the SEP 50% probable. I just need it for 95% and/or 99%.
Thanks again.
Tina
